1. I'd rather not use a solution using external modules, since the collector will have to run on MANY hosts as painlessly and non-intrusively as possible. Is there a high performance approach without external modules?
The modules cited in the code that Thelonius posted (IPC::Open3, IO::Select, Symbol) are not "external", in the sense that they are all included in the standard Perl "core" distribution. That is, wherever a reasonably current version of Perl is installed, these modules are also installed by default.
(If these many hosts you speak of have non-standard or hopelessly outdated perl installations, that's going to be a problem anyway.)
As for buffer size, the 1024 bytes suggested by Thelonius is fine for handling text that must ultimately be treated in a line-oriented fashion; if you're dealing with really high data rates, an 8k buffer should be about optimal.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|